48 ANNUAL REPORT 2012 13 PROPERTY PLANT AND EQUIPMENT Offce equipment furniture and B u i l d i n g s Machinery fxtures Total a n d and and property leasehold Aggregate c o n s t r u c t i o n computer Heavy plant and Land i m p r o v e m e n t s properties equipment hardware Vehicles equipment equipment Cost Balance as at January 1 2012 33483 73475 50580 196878 28055 65231 216861 664563 Additions 1833 7412 2490 35672 5373 7885 26056 86721 Disposals 102 35 5744 2080 8162 1152 17275 Foreign currency translation adjustments 7 3 2 12 Balance as at December 31 2012 35316 80778 53035 226806 31345 64952 241765 733997 Accumulated depreciation and impairment Balance as at January 1 2012 21116 9816 82642 17396 40120 11325 182415 Depreciation 4865 714 20192 4878 9580 15851 56080 Disposals 92 3319 2014 7521 393 13339 Foreign currency translation adjustments 3 3 2 8 Balance as at December 31 2012 25886 10530 99515 20257 42177 26783 225148 Net book value as at December 31 2012 35316 54892 42505 127291 11088 22775 214982 508849 Net book value as at January 1 2012 33483 52359 40764 114236 10659 25111 205536 482148 Net book value of assets under fnance lease as at December 31 2012 115 48922 3998 19854 16866 89755 Offce equipment furniture and B u i l d i n g s Machinery fxtures Total a n d and and property leasehold Aggregate c o n s t r u c t i o n computer Heavy plant and Land i m p r o v e m e n t s properties equipment hardware Vehicles equipment equipment Cost Balance as at January 1 2011 33483 68678 49193 165032 27710 64279 183018 591393 Additions 5085 1387 38897 5729 8412 51626 111136 Disposals 294 7051 5294 7448 17783 37870 Foreign currency translation adjustments 6 90 12 96 Balance as at December 31 2011 33483 73475 50580 196878 28055 65231 216861 664563 Accumulated depreciation and impairment Balance as at January 1 2011 16901 7684 68539 16795 35216 1982 147117 Depreciation 4401 2132 17426 4516 11426 9558 49459 Disposals 192 3323 3858 6520 215 14108 Foreign currency translation adjustments 6 57 2 53 Balance as at December 31 2011 21116 9816 82642 17396 40120 11325 182415 Net book value as at December 31 2011 33483 52359 40764 114236 10659 25111 205536 482148 Net book value as at January 1 2011 33483 51777 41509 96493 10915 29063 181036 444276 Net book value of assets under fnance lease as at December 31 2011 135 30328 5233 21074 16779 73549 NOTES TO THE CONSOLIDA TED FINANCIAL ST A TEMENTS DECEMBER 31 2012 AND 2011 IN THOUSANDS OF CANADIAN DOLLARS EXCEPT PER SHARE AMOUNTS